Camera-back.



W. P. FOLMER.

CAMERA BACK.

APPLIUATION TILED SEPT. 14, 1910.

- Patented May 6, 1913.

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W. F. FOLMER.

CAMERA BACK.

APPLIOATION'IILED SEPT. 14, 1910." I Patented May 6, 1913.

' ZflHEETfi-SHEET 2.

. I 1 i 5 Wuzmm FI1Z1ner i UNITED STATES OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

CAMERA-BACK. I

Specification of Letters Patent.

Patented May 6, 1913'.

To all ink-0m z' tmay concern. W

Be it known that 1, WILLIAM F. F OLMER, of Rochester, in the county of Monroe and State, of New'York, have invented certain 75 new and useful Improvements in Camera- Backs; and I do hereby declare the following to'be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the referencenumerals marked thereon.

My present invention relates" to photographyand more particularly to photo graphic cameras, and it-hasfor its object to provide. a simple," eflicient and convenient --form of back for'thejlatter, the improvementsbeing directed in part to the means forlholding the recordingdevices. within the bac a The invention has for-its further object to provide a revolving back -hayin a sim ple and cheaply producedmeans or-locking the sensitized material or'ot-her record:

ing medium in its-different positions while held by the back.

To these and other ends the invention con-- sists 1n certain improvements and.c0mb1nations of parts all as 'will be hereinafter more fully described, the novel features being pointed out in the claims at the end of bottom flanges 4 and side flanges 5, the latter being, utilized in part-for the purpose of Fig. 5, land is provided with a'centralopen- 111g 3 and with rearwardly turnedtop and rATENT or C WILLIAM roLiwER, or ROCHESTER, new YORK, assrenon T0 EASTMAN KODAK 00.,

ployed on .the rear while the upper andlower flanges 4 are preferably let intothe back, as shown. 'The opening 3 in the plate forms a bearingfor a carryingmember 8 turning thereon and which is interlocked therewith by means of flanged portions -9 that engage over the edges of the opening'on the front side of the attaching plate; The

carrier 8 is, itself, also preferably a sheet.

metal platehaving continuous rearwardly, turned flanges 10 at, its top andbottom and two sides and is provided with a central opening 11 registering with the opening 3.

that approximates the size and shape of the 7.5

sensitized 'area to be exposed. The front face of the "carrier that moves in contact with the attaching plate 2 is preferably covered with felt or' velvet 12 to render the jo-intdight-tight, which covering is, in the,

present instance, extended acros sfthe rear face also at 13 to give a close and light tight contact with the plateyand focusing screen hereinafter described.

Arranged on the rear face of the carrier the specification.

along side of the top and bottom flanges 1'0" In the drawingsz' Figure 1 is a central and extending between two side flanges 10 screen held by the back; Fig. 3 is a frag-- mentary rear elevation showing the plate holder. Substituted for the screen; Fig. 4.- is atfragmentary side elevation of Fig. 3; Fig.5; isa-front'elevation of theback detached'from the camera; Fig. 6 is a detail sectional View taken substantially on the line 6-6 of Fig. 3, and F 7 is a similar view taken substantially'on the, line 7--7 of Fig. 6.

Similar reference numerals throughout the several figures indicate the same parts.

The camera illustrated'in the presentembodiment of theinventioncomprlses a box.

or body 1, the rear end of which is spanned by the attaching late 2 of the camera back.

This plate is-pre erably made, in a continuous sheet, as shown more particularly in aretwo bolster strips 14 which I prefer to make of wood and which carry plates 15 and 16 forming locking shoulders, one of which is slotted 'angularly at 17 to move toward and from the. otheron guide pins 18 when given a longitudinal thrust;

A ground glass focusing screen 19 is shown held in the back in Fig. 1, the same being mounted in a frame 20Jclosed at thev rear by a door 21 and provided with shoulders22 at the top and bottom with which 00 operate the shoulders 15 and 16 on the back to hold the. screen against displacement in a rearward direction while it is held from moving laterally, parallel with the back by the side flanges 10 of the carriage. In the other. figures anordinary reversible plate holder 23 is shown held within the back to hold two plates Qfor successive exposures.

ThisJ"-p late holder may be of an ordinary type, as stat'ed, 'except that its oppositeedges. are gro'ovedfout at 25, each groove forming a pair of. spaced locking shoulders 26 and 27.

WVhen one side of the plate holder is being exposed the shoulders and 16 on the 'carrier interlock, respectively, with one of the" accessible to the fingers of the operator, as

shown in Fig. To this endthe right hand flange 10 of Fig. 2 preferablyhas less depth, as indicated in dotted lines in Fig. 4,.

permitting it to engage within a channel or groove 30 extending across the end of the plate holder on each face thereof and form-' ing locking shoulders 31 flange cooperates.

T he operation andpurpose of a revolving with which the back being well known in the art they re-- quire no explanation here beyond saying that with the carrier 8 in one position the plate or screen is presented with its greatest dimension lying inone direction while with a quarter turn of the carrier it is presented with its greatest dimension extending in a relatively angular direction for photographing objects of either horizontal or vertical maximum extent. The devices which record the image, namely, the focusing screen and sensitized plate, the one recording it temporarily, and the other permanently, are interchangeable on,the back through the operation of the movable locking shoulder 16.

In order to lock the carrier 8 in its different positions of adjustment 1 provide it with a series of abutments 82 formed in the present instance by notches in the flange 9 that interlocks with the attaching plate 2, as shown clearly in Fig. 5, and these abutments are automatically engaged by a latch 33, pivoted at 34 to the front face of the attaching plate 2 and normally traveling on the periphery of theflange 9 under the ten-- sion of a leaf spring 35 which cooperates with an arm 36 thereon. To release the latch for the purpose of changing the adjustment, a push extend through the securing flange 5 of the button 37 is provided to attaching plate, which push button engages the arm 36 in opposition to the spring 35.

By such an arrangement of parts the baclc can be easily assembled and then applied to the rear of the camera box or body and it may also be removed Withoutgreat trouble should this be desired for the purpose of making repairs or to obtain free access to the interior of the camera.

1 claim as my invention 1. In a camera back, the'combination with a carrier having a central opening andrear- Wardly turned flanges and a pair of-locking shoulders on the, carrier movable one toward and from the other, of a holder for the recording element provided with. shoulders' cooperating with the flanges onthe carrier to prevent a lateral or endwise movement of the holder and having shouldersinterlock ing with the shoulders on thecarrier to pre-' vent disengagement of the holder;..from the carrier in a rearward direction,

In'a camera back, the combination with a carrier comprising a plate hav ng a central opening and rearwardly turned flanges, of bolsters arranged on the rear ofthe plate between the flanges, members forming locking shoulders secured to the bolsters, one of said members beingv movable toward and from the other, and. a holder for the recording element provided with shoulders coop-- crating with the flanges on the carrier to prevent lateral or endwise movement of the holder and having shoulders interlocking with the shoulders on the carrier to preventdisengagement of the holder from the carrier in a rearward direction.

3. In a camera back, the combination with a carrier having a rearwardly turned flange, of a reversible plate holder having a groove in each of its opposite front' and rear faces adapted to cooperate in turn with the flange on the carrier as the holder is reversed 'to prevent lateral or endwise movement of the holder but allowing its end to project beyond the carrier and interlocking parts on the holder and carrier for preventing disengagement of said members in a rearward direction.

4. In a rotary camera back, the combination with an attaching member comprising a platehaving a central opening and provided with a forwardly turned flange forming a means for attaching it to the camera box, ofa revoluble carrier having a bearing in the opening and provided with a flanged portion interlocking with the .forwardLside i of the plate, a, plurality of notches being provided in such flanged portion forming abut-ments, a latch mounted on "the frontface ofthe attaching member and cooperating withthe abutments to lock the .r'evoluble carrier in different positions of adjustment, a spring. normally "tending to throw the latch into engaging position, and an operat ing device for releasing the latch mounted in the securing flange of the attaching plate.-

- WILLIAM F. FOLMER.

Witnesses RUssnLL B; GRIFFITH, NELSON Corr. 

